A rocket is moving away from the solar system at a speed of 6.0 x 10^3 m/s. It fires its engine, which ejects exhaust with a speed of 3.0 x 10^3 m/s relative to the rocket. The mass of the rocket at this time is 4.0 x 10^4 kg, and its acceleration is 2.0 m/s/s.(adsbygoogle = window.adsbygoogle || []).push({});

A) What is the thrust of the engine?

I thought to use the equation T = ma ? T = (4.0 x 10^4 kg)(2.0m/s/s) = 8.0 x 10^4 N.

B) At what rate, in kilograms per second, is exhaust ejected?

I'm stumped on this one, I thought that's what Thrust was?

I thought to maybe use the equation: Vf-Vi = Vrel ln(Mi/Mf) but i don't even know how to use it in this situation... Any help would be great, thanks! ~Dave

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# Homework Help: What is the thrust of the engine?

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